Obviously, keeping the tops on your markers is important as they can easily dry out.
Many artists organize their markers in marker cases, similar to the Prismacolor Premier®Carrying Case, to keep them organized according to color groupings they commonly use together.
That has the double benefit of keeping the markers organized and easily transportable.
Colored pencils should be stored away from direct sunlight and heat.
The best condition for colored pencils is a cool, dry location that is not subject to extreme changes in temperatures or humidity. It can also be helpful to group clusters of similar colors to prevent spending excessive time hunting for the right shade.
With a little planning and organization, you can help prolong the life of your favorite tools and make your finding the right tool a bit easier.
Tools used: Prismacolor Premier® Carrying Case